There are probably always going to be a rare few who it improves for. I think more likely they just get used to more mild tinnitus, like I used to have. Over many years, mine just slowly got worse, until it got significantly worse suddenly two years ago. No improvement.
@Marshall the healing is so incredibly slow. My main issue right now is the zaps of electricity. Like tsk, tsk, tsk. Maybe they are getting thinner?? Maybe not?? I don't know anymore. I can FEEL them. Horrific.